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Updated: May 25, 2026

Iridium(III) Luminescent Probe for Detection of the Malarial Protein Biomarker Histidine Rich Protein-II

Iridium(III) Luminescent Probe for Detection of the Malarial Protein Biomarker Histidine Rich Protein-II

Published on: July 7, 2015

A simple and efficient fluorescent sensor for histidine.

Zeng Huang¹, Jiao Du, Jing Zhang

¹Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China.

Chemical Communications (Cambridge, England)

|February 4, 2012

Summary

This summary is machine-generated.

A simple coordination complex, terpyridine-CuCl(2), acts as a sensitive fluorescent sensor for histidine detection in water. This method offers a significant fluorescence enhancement for accurate amino acid analysis.

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Area of Science:

Coordination chemistry
Analytical chemistry
Biochemistry

Background:

Amino acids, particularly histidine, play crucial roles in biological systems.
Developing sensitive and selective detection methods for amino acids is essential for biochemical research and diagnostics.
Fluorescent sensors offer advantages in sensitivity and real-time monitoring for analyte detection.

Purpose of the Study:

To investigate the potential of a simple coordination complex, terpyridine-CuCl(2), as a fluorescent sensor.
To evaluate the sensor's efficiency and sensitivity for detecting histidine in aqueous solutions.
To explore the mechanism behind the fluorescence enhancement upon histidine binding.

Main Methods:

Synthesis and characterization of the terpyridine-CuCl(2) coordination complex.
Spectroscopic analysis (fluorescence spectroscopy) to monitor changes upon addition of histidine.
Optimization of experimental conditions (pH, concentration) for histidine detection.
Evaluation of sensor selectivity against other amino acids.

Main Results:

The terpyridine-CuCl(2) complex exhibited efficient fluorescence sensing capabilities for histidine.
A significant fluorescence enhancement, up to 1004-fold, was observed in the presence of histidine.
The sensor demonstrated high sensitivity and selectivity for histidine in aqueous media.
The fluorescence enhancement is attributed to the interaction between the copper ion in the complex and histidine.

Conclusions:

Terpyridine-CuCl(2) is a highly effective fluorescent sensor for histidine detection.
This coordination complex offers a promising tool for sensitive and selective amino acid analysis in biological samples.
The developed method provides a simple and efficient approach for histidine quantification.